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Ju-Ryoun Soh,Nam-Seok Kim,Chan-Ho Oh,Suk-Heung Oh,Youn-Soo Cha 한국식품영양과학회 2010 Preventive Nutrition and Food Science Vol.15 No.3
This study evaluated the effects of carnitine and/or GABA supplementation on immune function, lipid profiles and some vitamins in mice chronically administered alcohol. BALB/c mice were fed with either AIN-76 diet (N), control diet plus alcohol (4 g/㎏ bw, E), E plus 0.5 g/㎏ bw carnitine (EC), E plus 0.5 g/㎏ bw GABA (EG), or E plus 0.5 g/㎏ bw carnitine plus 0.5 g/㎏ bw GABA (ECG) for 6 weeks. Administrations of the carnitine and/or GABA prevented alcohol-induced increases in triglyceride concentrations in serum and liver. However, there was no difference among the supplemented groups. Serum vitamin E concentration was higher in mice supplemented with EC and EG, but not in mice given ECG. Phagocytic activity of peritoneal macrophages was increased in EG group compared with E group. The subpopulations of murine splenocyte’s TH cells were increased significantly in EC and ECG groups. These data suggest that immune function, lipid profiles and some immune-related lipid soluble vitamins were positively changed by supplementation of carnitine or GABA, but do not show any synergistic effect of mixed supplementation.
Ju-Ryoun Soh,Youn-Soo Cha 한국식품영양과학회 2004 Preventive Nutrition and Food Science Vol.9 No.1
This study investigated the effects of carnitine and/or γ-aminobutyric acid (GABA) supplementation on lipid profiles and some immune related nutrient in mice. Balb/c male mice were orally treated with either an AIN-76 diet (Con), a control diet plus carnitine (CS, 0.5 g/kg bw), a control diet plus GABA (GS, 0.5 g/kg bw) or a control diet plus carnitine plus GABA (CGS, 0.25 g/kg bw, respectively) for 6 weeks. There were no significant differences in feed consumption, energy intake, body weight gain or feed efficiency ratio among the groups during the experimental period. However, abdominal fat deposits were smaller in CS, GS and CGS groups compared with the Con group. Serum and liver triglycerides also were lower in CS, GS and CGS and serum total cholesterol was significantly lower in the CGS group compared with the Con group. Serum LDL cholesterol was lower in the CGS group and liver HDL cholesterol was significantly higher in the CS group compared with Con group. In serum, stearic acid and selecholeic acid were lower, but arachidic acid was higher in the GS group. Liver stearic acid was higher but oleic acid lower in CGS group compared with Con group. In carnitine supplemented groups, serum and liver nonesterified carntine (NEC), acidsoluble acylcarnitine (ASAC), total carnitine (TCNE) concentrations were higher in only the CS group, not CGS group. Serum vitamin A and E concentrations were not different among the groups. These results may suggest that carnitine and/or GABA supplementation improves lipid profiles in mice, but did not affect the immune-related nutrients that we measured under the experimental conditions of this study.
Ju-Ryoun Soh,Tokuo T. Yamamoto,Youn-Soo Cha 한국식품영양과학회 2003 Preventive Nutrition and Food Science Vol.8 No.2
To investigate the effects of the supplementation of carnitine and/or γ-aminobutric acid (GABA), Sprague-Dawley male rats were orally treated with either an AIN-76 diet (control), a control diet plus ethanol (CE, 4 g ethanol/kg bw), CE plus L-carnitine (CEC, 0.5 g/kg bw), CE plus GABA (CEG, 0.5 g/kg bw), or CE plus L-carnitine plus GABA (CECG, 0.25 g/kg bw each) for 6 weeks. Serum triglyceride levels were increased in the CE group and were decreased significantly in the CEC, CEG and CECG groups. HDL-cholesterol was increased and LDL-cholesterol was decreased in the CEG and CECG groups compared with the CE group. Serum GOT and GPT levels increased by the chronic ethanol administration were decreased in the CEC group. In addition, we have evaluated the mRNA levels of carnitine palmitoyltransferase-I in those groups. Supplementation of carnitine/GABA had some recovery effects on the liver CPT-I mRNA levels which decreased by chronic ethanol administration. These results may suggest that supplementations of either L-carnitine or GABA are effective on the recovery of chronic ethanol-related symptoms, but no combined effects were shown.
Soh, Ju-Ryoun,Cha, Youn-Soo The Korean Society of Food Science and Nutrition 2004 Preventive Nutrition and Food Science Vol.9 No.1
This study investigated the effects of carnitine and/or ${\gamma}$ -aminobutyric acid (GABA) supplementation on lipid profiles and some immune related nutrient in mice. Balb/c male mice were orally treated with either an AIN-76 diet (Con), a control diet plus carnitine (CS, 0.5 g/kg bw), a control diet plus GABA (GS, 0.5 g/kg bw) or a control diet plus carnitine plus GABA (CGS, 0.25 g/kg bw, respectively) for 6 weeks. There were no significant differences in feed consumption, energy intake, body weight gain or feed efficiency ratio among the groups during the experimental period. However, abdominal fat deposits were smaller in CS, GS and CGS groups compared with the Con group. Serum and liver triglycerides also were lower in CS, GS and CGS and serum total cholesterol was significantly lower in the CGS group compared with the Con group. Serum LDL cholesterol was lower in the CGS group and liver HDL cholesterol was significantly higher in the CS group compared with Con group. In serum, stearic acid and selecholeic acid were lower, but arachidic acid was higher in the CS group. Liver stearic acid was higher but oleic acid lower in CGS group compared with Con group. In carnitine supplemented groups, serum and liver nonesterified carnitine (NEC), acidsoluble acylcarnitine (ASAC), total carnitine (TCNE) concentrations were higher in only the CS group, not CGS group. Serum vitamin A and E concentrations were not different among the groups. These results may suggest that carnitine and/or GABA supplementation improves lipid profiles in mice, but did not affect the immune-related nutrients that we measured under the experimental conditions of this study.
Soh, Ju-Ryoun,Kim, Nam-Seok,Oh, Chan-Ho,Oh, Suk-Heung,Cha, Youn-Soo The Korean Society of Food Science and Nutrition 2010 Preventive Nutrition and Food Science Vol.15 No.3
This study evaluated the effects of carnitine and/or GABA supplementation on immune function, lipid profiles and some vitamins in mice chronically administered alcohol. BALB/c mice were fed with either AIN-76 diet (N), control diet plus alcohol (4 g/kg bw, E), E plus 0.5 g/kg bw carnitine (EC), E plus 0.5 g/kg bw GABA (EG), or E plus 0.5 g/kg bw carnitine plus 0.5 g/kg bw GABA (ECG) for 6 weeks. Administrations of the carnitine and/or GABA prevented alcohol-induced increases in triglyceride concentrations in serum and liver. However, there was no difference among the supplemented groups. Serum vitamin E concentration was higher in mice supplemented with EC and EG, but not in mice given ECG. Phagocytic activity of peritoneal macrophages was increased in EG group compared with E group. The subpopulations of murine splenocyte's TH cells were increased significantly in EC and ECG groups. These data suggest that immune function, lipid profiles and some immune-related lipid soluble vitamins were positively changed by supplementation of carnitine or GABA, but do not show any synergistic effect of mixed supplementation.
Strategic design and fabrication of acrylic shape memory polymers
Park, Ju Hyuk,Kim, Hansu,Youn, Jae Ryoun,Song, Young Seok Institute of Physics Publishing 2017 Smart materials & structures Vol.26 No.8
<P>Modulation of thermomechanics nature is a critical issue for an optimized use of shape memory polymers (SMPs). In this study, a strategic approach was proposed to control the transition temperature of SMPs. Free radical vinyl polymerization was employed for tailoring and preparing acrylic SMPs. Transition temperatures of the shape memory tri-copolymers were tuned by changing the composition of monomers. X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy analyses were carried out to evaluate the chemical structures and compositions of the synthesized SMPs. The thermomechanical properties and shape memory performance of the SMPs were also examined by performing dynamic mechanical thermal analysis. Numerical simulation based on a finite element method provided consistent results with experimental cyclic shape memory tests of the specimens. Transient shape recovery tests were conducted and optical transparence of the samples was identified. We envision that the materials proposed in this study can help develop a new type of shape-memory devices in biomedical and aerospace engineering applications.</P>